Equivalent distortion measures forquantisation of LPC model

17 August 1995

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 31 (17) , 1410-1412
https://doi.org/10.1049/el:19950988

Abstract

The authors show that for small errors in an LPC model, spectral distortion and weighted squared distortion measures in the coefficients of arbitrary one-to-one transformations of the LPC parameters are equivalent. For line spectrum pairs and immitance spectrum pairs, the weighting matrix is diagonal, which is advantageous for efficient quantisation.

Keywords

LPC MODEL
LINE SPECTRUM PAIRS
WEIGHTED SQUARED DISTORTION MEASURES
IMMITTANCE SPECTRUM PAIRS
DIAGONAL WEIGHTING MATRIX
SPECTRAL DISTORTION
SPEECH SPECTRUM
EQUIVALENT DISTORTION MEASURES
QUANTISATION

This publication has 2 references indexed in Scilit:

Efficient vector quantization of LPC parameters at 24 bits/frame
IEEE Transactions on Speech and Audio Processing, 1993
On the statistics of the estimated reflection coefficients of an autoregressive process
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1983